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Finding the Fourth Proportional to 425,359.58, 638,334.05 and 169,165.90

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Solution

The fourth proportional to 425,359.58, 638,334.05 and 169,165.90 is: 253,866.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,359.58 : 638,334.05 = 169,165.90 : x
  2. Step 2: Convert to fraction form
    425,359.58/638,334.05 = 169,165.90/x
  3. Step 3: Cross multiply
    425,359.58x = 638,334.05 × 169,165.90
  4. Step 4: Simplify right side
    425,359.58x = 107,984,352,261.60
  5. Step 5: Solve for x
    x = 107,984,352,261.60/425,359.58
  6. Step 6: Final answer
    x = 253,866.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.